diff --git a/fastly/block_fastly_service_backend_test.go b/fastly/block_fastly_service_backend_test.go
index ff8a2b8cd..bb6701d3e 100644
--- a/fastly/block_fastly_service_backend_test.go
+++ b/fastly/block_fastly_service_backend_test.go
@@ -394,37 +394,12 @@ resource "fastly_service_vcl" "foo" {
 }`, serviceName, domainName, backendAddress, backendName, backendAddress, backendName, backendAddress, backendName, backendAddress, backendName)
 }
 
-func testAccServiceVCLBackendWithBooleans(serviceName, domainName, backendAddress, backendName string, useSSL, sslCheckCert, preferIPv6, autoLoadbalance bool) string {
-	return fmt.Sprintf(`
-resource "fastly_service_vcl" "foo" {
-  name = "%s"
-
-  domain {
-    name = "%s"
-  }
-
-  backend {
-    address           = "%s"
-    name              = "%s"
-    use_ssl           = %t
-    ssl_check_cert    = %t
-    prefer_ipv6       = %t
-    auto_loadbalance  = %t
-    port              = 443
-  }
-
-  force_destroy = true
-}`, serviceName, domainName, backendAddress, backendName, useSSL, sslCheckCert, preferIPv6, autoLoadbalance)
-}
-
-func TestAccFastlyServiceVCLBackend_PreserveBooleansDuringNameChange(t *testing.T) {
+func TestAccFastlyServiceVCLBackend_BooleanFieldsPreservedOnTimeoutUpdate(t *testing.T) {
 	var service gofastly.ServiceDetail
 	serviceName := acctest.RandomWithPrefix("tf-backend")
 	domainName := fmt.Sprintf("test.%s.com", acctest.RandString(10))
 	backendAddress := "httpbin.org"
-
-	initialBackendName := "test-backend"
-	updatedBackendName := "test-backend-renamed"
+	backendName := "test-backend"
 
 	// Values we want to preserve
 	useSSL := true
@@ -432,13 +407,21 @@ func TestAccFastlyServiceVCLBackend_PreserveBooleansDuringNameChange(t *testing.
 	preferIPv6 := true
 	autoLoadbalance := true
 
+	initialConnectTimeout := 1000
+	updatedConnectTimeout := 2000
+
 	resource.ParallelTest(t, resource.TestCase{
 		PreCheck:          func() { testAccPreCheck(t) },
 		ProviderFactories: testAccProviders,
 		CheckDestroy:      testAccCheckServiceVCLDestroy,
+
 		Steps: []resource.TestStep{
+			// Step 1: Create
 			{
-				Config: testAccServiceVCLBackendWithBooleans(serviceName, domainName, backendAddress, initialBackendName, useSSL, sslCheckCert, preferIPv6, autoLoadbalance),
+				Config: testAccServiceVCLBackendWithBooleansAndConnectTimeout(
+					serviceName, domainName, backendAddress, backendName,
+					useSSL, sslCheckCert, preferIPv6, autoLoadbalance, initialConnectTimeout,
+				),
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckServiceExists("fastly_service_vcl.foo", &service),
 					resource.TestCheckResourceAttr("fastly_service_vcl.foo", "backend.#", "1"),
@@ -446,11 +429,15 @@ func TestAccFastlyServiceVCLBackend_PreserveBooleansDuringNameChange(t *testing.
 					resource.TestCheckResourceAttr("fastly_service_vcl.foo", "backend.0.ssl_check_cert", fmt.Sprintf("%t", sslCheckCert)),
 					resource.TestCheckResourceAttr("fastly_service_vcl.foo", "backend.0.prefer_ipv6", fmt.Sprintf("%t", preferIPv6)),
 					resource.TestCheckResourceAttr("fastly_service_vcl.foo", "backend.0.auto_loadbalance", fmt.Sprintf("%t", autoLoadbalance)),
+					resource.TestCheckResourceAttr("fastly_service_vcl.foo", "backend.0.connect_timeout", fmt.Sprintf("%d", initialConnectTimeout)),
 				),
 			},
+			// Step 2: Update connect_timeout only
 			{
-				// Change name only, rest stays the same
-				Config: testAccServiceVCLBackendWithBooleans(serviceName, domainName, backendAddress, updatedBackendName, useSSL, sslCheckCert, preferIPv6, autoLoadbalance),
+				Config: testAccServiceVCLBackendWithBooleansAndConnectTimeout(
+					serviceName, domainName, backendAddress, backendName,
+					useSSL, sslCheckCert, preferIPv6, autoLoadbalance, updatedConnectTimeout,
+				),
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckServiceExists("fastly_service_vcl.foo", &service),
 					resource.TestCheckResourceAttr("fastly_service_vcl.foo", "backend.#", "1"),
@@ -458,12 +445,41 @@ func TestAccFastlyServiceVCLBackend_PreserveBooleansDuringNameChange(t *testing.
 					resource.TestCheckResourceAttr("fastly_service_vcl.foo", "backend.0.ssl_check_cert", fmt.Sprintf("%t", sslCheckCert)),
 					resource.TestCheckResourceAttr("fastly_service_vcl.foo", "backend.0.prefer_ipv6", fmt.Sprintf("%t", preferIPv6)),
 					resource.TestCheckResourceAttr("fastly_service_vcl.foo", "backend.0.auto_loadbalance", fmt.Sprintf("%t", autoLoadbalance)),
+					resource.TestCheckResourceAttr("fastly_service_vcl.foo", "backend.0.connect_timeout", fmt.Sprintf("%d", updatedConnectTimeout)),
 				),
 			},
 		},
 	})
 }
 
+func testAccServiceVCLBackendWithBooleansAndConnectTimeout(
+	serviceName, domainName, backendAddress, backendName string,
+	useSSL, sslCheckCert, preferIPv6, autoLoadbalance bool,
+	connectTimeout int,
+) string {
+	return fmt.Sprintf(`
+resource "fastly_service_vcl" "foo" {
+  name = "%s"
+
+  domain {
+    name = "%s"
+  }
+
+  backend {
+    address            = "%s"
+    name               = "%s"
+    use_ssl            = %t
+    ssl_check_cert     = %t
+    prefer_ipv6        = %t
+    auto_loadbalance   = %t
+    connect_timeout    = %d
+  }
+
+  force_destroy = true
+}`, serviceName, domainName, backendAddress, backendName,
+		useSSL, sslCheckCert, preferIPv6, autoLoadbalance, connectTimeout)
+}
+
 func TestAccFastlyServiceVCLBackend_Minimal(t *testing.T) {
 	var service gofastly.ServiceDetail
 	serviceName := fmt.Sprintf("tf-test-%s", acctest.RandString(10))